Optometric Toolkit

calculate contact lens power vertex optical thickness corneal curvature K's

This is a simple application designed for Optometrists, Opticians, and other eye care professionals.

With this tool, you can

1) Determine Contact Lens Power by specifying Spectacle Rx and vertex distance

2) Convert Corneal Curvature from Diopters (D) to Base Curve (mm)

3) Estimate ophthalmic lens thickness [ center and edge]

a) This gives a rough estimate of what the edge and center thickness of a lens would be.

Please enter your data in minus cylinder format for the lens thickness calculator to work properly